drag flap造句

The two propellers were driven in opposite directions to improve the take-off and landing characteristics, and high-drag flaps were integrated to provide for greater power during approaches.
Some vehicles use a combination of braking mechanisms, such as drag racing cars with both wheel brakes and a parachute, or airplanes with both wheel brakes and drag flaps raised into the air during landing.
It's difficult to find drag flap in a sentence. 用drag flap造句挺难的